20220253 Ver 1_11 - 12-010 SW Plan Approval_20220214

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6kh'"Al", 161"hiff
DEPARTMENT OF PUBLIC UTILITIES
POST OFFICE BOX 2263
S IITHFI LD, N.C. 27577
[phone]
January 10, 2014
Cornwallis NC CPDC, LILC
Attn: George Richards
520 Ra ablc Way, Building B, Suite 111
Raleigh, INC 27616
Re: Cornwallis Commons
Storrnwater Management Statement and Plan
Dear Mr. Richards:
We have reviewed the Stormwater Management Plan and calculations submitted for the
.proposed Cornwallis Commons development located at NC Hwy 42 and Cornwallis Road
in Johnston County, North Carolina. Based upon the information submitted, the
stormwater management plan has been approved with the following stipulations:
1. The total impervious surface area for the development may not exceed 6.51 acres
which is 50% of the total development area.
. Each lot in the development will require an individual Stormwater Permit
Application and approval to demonstrate compliance with the overall stormwater
management plan.
3. All lots in the development, to the maximum extent possible, shall be designed so
that stormwater runoff from impervious surfaces is directed to the bioretention
basin located on the eastern side of the proposed development.
4. A fee for 25% of the construction cost of the bioretention basin shall be paid to
Johnston County Public Utilities. An engineering estimate or documentation of
actual construction costs for the bioretention basin must be provided with the
payment.
5. In accordance to SL 2009-337, developers must seek nutrient offset credits from
private mitigation banks, if available, before applying for credits from the North
Carolina Ecosystem Enhancement Program (EEP). At this time, there are three
private mitigation banks available to provide the requested nitrogen offset. Prior
to construction of the final lot, please provide a receipt of payment for a Nitrogen
Offset to buy dawn 1,648.2 lbs nitrogen. The nitrogen offset payment is based
on an assumed maximum impervious area of 6,51 acres for the Cornwallis
Commons development. If the actual full build -out impervious area will be less
than 6.51 acres, a modified stormwater management plan may be submitted with
updated nitrogen export calculations.
Printed oo t®Cy:;Ied paper 0

Page 2 of 3
January 10, 2014
Cornwallis Commons
Prior to construction of the final lot, please contact any of the below private
mitigation banks for availability and costs associated for the offset of 1,648.2 lbs
of nitrogen.
Environmental Banc &
Restoration Systems, LLC
Exchange, LI.LC (EB )
1101 Haynes Street, Suite 211
919 Capability Drive, -Suite
Raleigh, North Carolina 27604
3100
Tel [phone]
Raleigh, NC 27606
Fax [phone] �
Tel [phone]
Fax [phone]
VViIdlartds, Inc.
�.
5605 Chapel Hill Road, #122
Raleigh, NC 27607
Tel 9('}1y9-8Q51�[-9[}9(}8p6
Fax [phone]
7
6. Please provide a copy of the approval letter from NCDENR Land Quality for the
Sedimentation and Erosion Control Plan.
7. Please provide a notarized and recorded Inspection and Maintenance
Agreement for the bioretention pond. An Inspection and Maintenance: Agreement
must be recorded in the Johnston. County Register of lids Office for each BIB P
constructed. Inspection records shall be provided to the Johnston County Public
Utilities Department on a yearly basis. The first annual inspection report is due
no later than one year after the engineer's final certification of the stormwater
facilities. Annual inspection reports may not be submitted earlier than 45 days
from the due date.
8. Prior to the Certificate of Occupancy being released for any of the proposed lots,
please provide a stormwater certification stating that all stormwater facilities were
constructed in accordance with the approved stormwater management plan. If the
stormwater facilities cannot be completed because a temporary sediment basin or
other temporary erosion control devices conflict with final completion of the
stornawater facilities, a performance bond or Letter of Credit (LOC) with Johnston
County Public Utilities as the beneficiary must be provided for 100% of the
estimated costs to complete the stormwater facilities. An engineering estimate or
contractor's estimate to complete the stormwater facilities roust be submitted and
approved prior to the remittance of the performance bond or LOC.
9. Please indicate all drainage easements, riparian buffers, jurisdictional wetlands,
and flood hazard areas on the Final Plat.

Page 3 of 3
January 10, 2014
Cornwallis Commons
Please be reminded that no land disturbing activities may begin on this site until all
other necessary approvals have been obtained. Acopy of this letter will be forwarded
to the Planning Office for their files. If you have any questions or need additional
information, please contact me at [phone] or by email at
jamie,-"erreto(c'ojobnstonnc.com.
Sincerely,
/amie Guerrero, PE, CPSWO
Stormwater Administrator
Cc: Berry Gray Planning
Russell Briggs, PE — B&F Consulting via email
Steven Sanderson, PE — Sanderson Engineering via email

6"I'"JAW Y"I"11"MY
DEPARTMENT OF PUBLIC UTILITIES
POST OFFICE BOX 2263
SMITHFIELD, N.C. 27577
[phone]
January 22,2014
Cornwallis NC CPDC, LLC
Attu. George Richards
3605 Glenwood Avenue, Suite 510
Raleigh NC 27612
Re: Cornwallis Commons
Stormwater Management Statement and Plan
Dear Mr. Richards:
We have reviewed the Stormwater Management Plan and calculations submitted for the
proposed Cornwallis Commons development located at NC Hwy 42 and Cornwallis Road
in Johnston County, North Carolina. Based upon the information submitted, the
stormwater management plan has been approved with the following stipulations:
I. The total impervious surface area for the development may not exceed 6.51 acres
which is 50% of the total development area.
2. Each lot in the development will require an individual Stormwater Permit
Application and approval to demonstrate compliance with the overall stormwater
management plan.
3. All lots in the development, to the maximum extent possible, shall be designed so
that stomiwater runoff from impervious surfaces is directed to the bioreteiition
basin located on the eastern side of the proposed development.
4. A fee for 25% of the construction cost of the bioretention basin shall be paid to
Jotmston County Public Utilities. An engineering estimate or documentation of
actual construction costs for the bioretention basin must be provided with the
payment.
5. In accordance to SL 2009-337, developers must seek nutrient offset credits from
private mitigation banks, if available, before applying for credits from the North
Carolina Ecosystem Enhancement Program (EEP). At this time, there are three
private mitigation banks available to provide the requested nitrogen offset. Prior
to construction of the final lot, please provide a receipt of payment for a Nitrogen
Offset to buy down 1,648.2 lbs nitrogen. The nitrogen offset payment is based
on an assumed maximum impervious area of 6,51 acres for the Cornwallis
Commons development. If the actual full build -out impervious area will be less
than 6.51 acres, a modified stormwater management plan may be submitted with
updated nitrogen export calculations.
Primed on reqded paor 0

Pale 2 of J
January 22, 2014
Cornwallis Commons
Prior to construction of the final lot, please contact any of the below private
mitigation banks for availability and oasts
associated for the offset of 1,648,2 lbs
of nitrogen.
Environmental Banc &
Restoration Systems, L .0
Exchange, LLC (EBB)
1101 Haynes Street, Suite 211
909 Capability Drive, Suite
Raleigh, North Carolina 27604
3100
Tel [phone]
Raleigh, NC 27606
Fax [phone]
Tel [phone]
Fax [phone]
_
Wildlands, Inc.
5605 Chapel Hill Road, #22
Raleigh, NC 27607
Tel [phone]
� Fax [phone]
6. Please provide a copy of the approval letter from NCDENR Land Quality for the
Sedimentation and Erosion Control Plan.
7. Please provide a notarized and recorded Inspection and .Maintenance
Agreement for the bioretention pond. An Inspection and Maintenance Agreement
must be recorded in the Johnston County Register of Deeds Office for each BMP
constructed. Inspection records skull be provided to the Johnston County Public
Utilities Department on a yearly basis. The first annual inspection report is due
no later than one year after the engineer's final certification of the stormwater
facilities. Annual inspection reports may not be submitted earlier than 45 days
from the clue date,
8. Prior to the Certificate of Occupancy being released for any of the proposed bats,
please provide a stormwater certification stating that all stormwater facilities were
constructed in accordance with the approved stormwater management plan. if the
stormwater facilities cannot be completed because a temporary sediment basin or
other temporary erosion control devices conflict with final completion of the
stormwater facilities, a performance bond or Letter of Credit LOC with Johnston
County Public Utilities as the beneficiary must be provided for 100% of the
estimated costs to complete the stormwater facilities. An engineering estimate or
contractor's estimate to complete the stormwater facilities must be submitted and
approved prior to the remittance of the performance bond or LOC.
9. Please indicate all drainage easements, riparian buffers, jurisdictional wetlands,
and flood hazard areas on the Final. Plat.

Page 3 of 3
January 22, 2014
Cornwallis Commons
Please he reminded that no land disturbing activities may begin on this site until all
other necessary approvals have been ohtained. A copy of this letter will be forwarded
to the Planning Office for their files. if you have any questions or need additional
information, please contact me at [phone] or by email at
j amie.guerreroLi ohnstonnc.com.
Sincerely,
Jamie Guerrero, PE, CPSWO
Stormwater Administrator
cc: Berry Gray -- Planning
Russell Briggs, PE — B&F Consulting via email